Vacuum line to fuel regulator
#1
Newbie
Thread Starter
Join Date: Jan 2009
Location: SoCal
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
99 E55; and other
Vacuum line to fuel regulator
Hello all,
Does anyone know where the vacuum line connecting to the fuel regulator connects to in the engine bay? I changed the fuel filter/regulator of my 99 E55. However, I don't think the vacuum line is pulling any vacuum to the regulator. I don't know where the other end connected to.
Thanks,
Vincent
Does anyone know where the vacuum line connecting to the fuel regulator connects to in the engine bay? I changed the fuel filter/regulator of my 99 E55. However, I don't think the vacuum line is pulling any vacuum to the regulator. I don't know where the other end connected to.
Thanks,
Vincent
#2
Newbie
Thread Starter
Join Date: Jan 2009
Location: SoCal
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
99 E55; and other
Hello, I finally found the answer. The vacuum line is connected to the return hose of the fuel tank. The design is different from most cars where the line is connected to the vacuum source in the intake manifold. I also discovered my fuel cap might be leaking, even though there is no check engine light. Not sure it is leaking when pressurized or under vacuum, but it created lots of fuel related problems.